CN110396226A - A kind of modified white carbon black and its tread rubber - Google Patents
A kind of modified white carbon black and its tread rubber Download PDFInfo
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- CN110396226A CN110396226A CN201910733787.5A CN201910733787A CN110396226A CN 110396226 A CN110396226 A CN 110396226A CN 201910733787 A CN201910733787 A CN 201910733787A CN 110396226 A CN110396226 A CN 110396226A
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- carbon black
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- white carbon
- raw material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C1/00—Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition
- B60C1/0016—Compositions of the tread
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
- C08K3/36—Silica
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K9/00—Use of pretreated ingredients
- C08K9/02—Ingredients treated with inorganic substances
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L7/00—Compositions of natural rubber
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L9/00—Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2296—Oxides; Hydroxides of metals of zinc
Abstract
Present applicant proposes a kind of modified white carbon black and its tread rubbers; wherein; a kind of modified white carbon black by being made following preparation method; the preparation method includes the steps that surfactant progress high-temperature calcination is added after mixing raw material with carbon source material obtains modified white carbon black, and the high-temperature burning process includes the steps that being passed through the gas containing carbon atom under the protection of inert gas.Carbon source material is wrapped in raw material surface in the application and makes carbon source material in raw material surface carbonation by high-temperature burning process, effectively reduce the agglomeration between raw particles, its dispersibility in rubber material is improved, and improves its conductive and heating conduction.Since carbon source material will appear gap in carbonisation, the application is passed through the gas containing carbon atom in calcining, these gases are efficiently entering in gap, have effectively filled up the gap generated in carbon source material carbonisation, improve the carbonation rate and carbonization uniformity on raw material surface.
Description
Technical field
The application belongs to white carbon black preparation field, and in particular to a kind of modified white carbon black and its tread rubber.
Background technique
In vehicle traveling process, the external factor such as self weight, the windage of vehicle are removed, tire, which integrates oil consumption to it, to be had very greatly
Influence.In driving process, due to the variation of Tire aspect and the interaction of inner rubber molecule, biggish rolling is produced
Dynamic resistance will cause the waste of partial automobile power.For this purpose, reducing tire drag just becomes the project of tyre industry.
It is physical can significantly to reduce rolling resistance, abrasion of rubber material etc. as a kind of important rubber reinforcing filler for white carbon black
Can, it is widely used in rubber industry.
White carbon black, that is, fumed silica is commonly called as, molecular formula SiO2·nH2O has activity and adsorptivity well.
(except hydrofluoric acid) not soluble in water and sour is not decomposed by high temperature.It is widely used in paint, ink, feed, pesticide, extinguishing chemical, papermaking
Etc. industries.Adsorbent is often made in cement slurry, thickening and the solidifying effect of rush are obvious.But it (is had since its surface texture is special
Surface hydroxyl and absorption water), particle shape is special (small, large specific surface area of particle etc.), causes application in the material by shadow
It rings.Such as in rubber vulcanization system, it cannot disperse in rubber well, to reduce curing efficiency and the reinforcement of rubber
Performance.In order to preferably give full play to its performance advantage, it is necessary to dialogue carbon blacksurface is modified, and makes the reduction of its agglomerating force,
Improved with the surface compatability of rubber, come solve its dispersion in rubber, it is thermally conductive the problems such as.
CN103937293A is related to a kind of carbon coating white carbon black, and the present invention uses starch, oligosaccharide, glycerol, polyethylene glycol
For raw material, white carbon black is modified, uniformly coats one layer of carbon-coating in silica surface, then through inert gas or anoxybiotic atmosphere
High temperature is carbonized to obtain a kind of core-shell structure nanopowder end using silica as core, carbon for shell.Compared with traditional white carbon black, this
It invents obtained carbon coating white carbon black surface and possesses unique carbon coating layer, impart white carbon black electric conductivity, improve white carbon black
It is structural, improve the compatibility of white carbon black and rubber, and apply the wet-sliding resistant performance that tire is improved in tire, rub
The features such as heat is small.
A kind of white carbon black of CN107603280A, comprising the following steps: white carbon black is added in blender, under stiring to white
Carbon source material aqueous solution is added in carbon black, is uniformly dispersed and heats, obtain to surface and be coated with the white carbon black of carbon source material；By gained
The white carbon black that surface is coated with carbon source material is dried, and then in an inert atmosphere, is carried out carbonization treatment, is obtained carbon coating hard charcoal
It is black；Gained carbon coating white carbon black is added in reaction kettle, is vacuumized, lower heating is stirred, indifferent gas is then passed through into reaction kettle
Body, boosting, constant temperature is at 90 DEG C~100 DEG C；Modifying agent is sprayed under stirring into reaction kettle, is warming up to 170 DEG C~175 DEG C, is taken out true
Sky reacts 3h~4h, then dries the white carbon black that get carbon coating and surface is modified.The preparation method simple process can get
The compatibility of carbon coating and the white carbon black of modification, the white carbon black and rubber material is good, particularly suitable in tire.
White carbon black surface carbonation is modified in the prior art, wraps up one layer of carburization zone on white carbon black surface, but organic contains
Carbonizable substance carries out that many gaps can be generated in high temperature cabonization treatment process, so that the practical carbonization encapsulation ratio in white carbon black surface is not high,
And carbonization is uneven, improve its dispersibility and molecular binding affinities in rubber can not well.
Summary of the invention
To solve the above-mentioned problems, present applicant proposes a kind of modified white carbon black and its tread rubbers, wherein a kind of modification is white
Carbon black obtains the step of modified white carbon black including adding surfactant progress high-temperature calcination after mixing raw material with carbon source material
Suddenly, the high-temperature burning process includes the steps that being passed through the gas containing carbon atom under the protection of inert gas.
Carbon source material is wrapped in raw material surface in the application and makes carbon source material in raw material by high-temperature burning process
Surface carbonation effectively reduces the agglomeration between raw particles, improves its dispersibility in rubber material, and improve
Its conductive and heating conduction.Since carbon source material will appear gap in carbonisation, the application is passed through in calcining containing carbon
The gas of atom, these gases are efficiently entering in gap, have effectively been filled up the gap generated in carbon source material carbonisation, have been mentioned
The high carbonation rate and carbonization uniformity on raw material surface.Wherein, the effect that carbonaceous gas fills up raw material surface pore, which shows themselves in that, fills out
Before benefit, white carbon black surface pore makes rubber material that can not all be coated on its surface, and surface Percentage bound is relatively low.It fills up
Afterwards, reduce porosity between the two, improve the surface conjugation of modified white carbon black and rubber material, be more advantageous to product
Strength enhancing.
Preferably, the gas containing carbon atom be methane, ethane, ethylene, acetylene, propylene, propane, benzene or toluene,
The rate that is passed through of the gas containing carbon atom is 20~100ml/min.The gas containing carbon atom, In are utilized in the application
It under surfactant and hot environment, is carbonized in gap, and is carbonized again on carbon source material surface, so that this
There is the double-deck carburization zone on application raw material surface, effectively raises the carbonation rate and carbonization uniformity on raw material surface, further increases
Dispersibility of the raw material in rubber material.
Preferably, the raw material is silicon-dioxide powdery, and the average grain diameter of silicon-dioxide powdery is 500-1800 mesh, dioxy
The density of SiClx powder is 2.5-2.8g/mL, and the iron-content in silicon-dioxide powdery is less than 500mg/kg.Raw material makes in the application
With high-purity silicon dioxide, surface is adsorbed without hydroxyl, and ingredient single stable can be used as the replacement of white carbon black in rubber production
Material.
Preferably, the carbon source material is water-soluble latex, and the water-soluble glue latex is Heveatex, in styrene-butadiene latex
One or two kinds of arbitrary proportions mixing.Water-soluble latex molecule in the application can be coated on silica particle surface,
Silica surface latex is carbonized after high temperature is fired, and improves its conductive, heating conduction.
Preferably, by weight percentage, the additional amount of the water-soluble latex is the 10-100% of raw material.
It preferably, further include the pretreated step of raw material, the pretreatment of raw material includes being put into raw material equipped with oxidation
5~10h of ball milling in the ball grinder of zirconium pearl reuses the step of the screen to filtrates of 500~1800 mesh obtains raw material filtrate.The application
Middle raw material is pre-processed by ball milling, is reduced its molecule agglomeration, is improved the dispersibility of raw material.
Preferably due to which product will reach 1000 mesh or more in the prior art, general milling tank is extremely difficult to require, so
The application can recycle high energy ball mill to carry out ball milling in ball grinder after ball milling, carry out general milling and high-energy ball milling
Machine carries out the time master control of both ball millings in 5-10h.
Preferably, 30-40min is mixed in raw material filtrate and carbon source material, is obtained after carrying out centrifugal spray drying step
To powder material, the condition of the centrifugal spray drying are as follows: the hot wind inlet temperature is 290-310 DEG C, the hot-blast outlet
Temperature is 105-111 DEG C, and the conveying speed of the mixed solution is 20-40ml/min, and the average drying time is 1.0-
1.5s.The application utilizes centrifugal spray drying step, further reduced the reunion between raw particles, so that carbon source material is more
Uniformly it is wrapped in raw material surface.
Preferably, according to parts by weight, after 5-100 parts of surfactant is added in 450-550 parts of powder material,
Stir 40~60min after, be placed in a vacuum drying oven after 70-100 DEG C of baking 1.5-2.5h be put into stirring-type reaction kettle into
Row high-temperature calcination, temperature is 700~950 DEG C when high-temperature calcination, 120~480min of reaction time.
Preferably, the inert gas is nitrogen, and the purity of the nitrogen is 99.99%, and the surfactant is hydroxyl
Sodium carboxymethylcellulose pyce, lauryl sodium sulfate, N- sodium lauroyl sarcosine, 1-isobutyl-3,5-dimethylhexylphosphoric acid, paraffin, coal tar, C5 stone
The mixing of one or more of oleoresin, C9 Petropols, petroleum residual oil, glycerol, hydroxyethyl cellulose, it is two or more
It is any proportion when mixing.The injection purpose of nitrogen is the oxygen replaced in reaction kettle in the application, prevents explosion and carbon-coating
Oxidation；Some colloidal substances, oil in the application surfactant etc. can be such that rubber and modified white carbon black has well
Compatibility, and performance is stable, no pollution to the environment.
This application provides a kind of tread rubbers comprising above-mentioned modified white carbon black, are prepared from the following raw materials in parts by weight:
Including 40-60 parts of natural rubber, 40-60 parts of butadiene rubber, 10-60 parts of carbon black N234,10-60 parts of modified white carbon black, coupling agent
2-5 parts of Si69,2-5 parts of stearic acid, 2-5 parts of zinc oxide, 1-3 parts of antioxidant 4020,0.5-2 parts of anti-aging agent RD, protection wax
70#0.5-2 parts, 80#0.5-2 parts of protection wax, 1-3 parts of reinforced resin, 0.5-2 parts of sulphur, 0.5-2 parts of accelerator NS.The application
In modified white carbon black can by tire formulation carbon black, white carbon black replacement 10~100%, corresponding tire coefficient of rolling resistance
10~50% can be reduced, tensile strength improves 10~20%.
Preferably, natural rubber is 20# natural rubber, and butadiene rubber is 9000# butadiene rubber.
The application can be brought the following benefits:
1. carbon source material is wrapped in raw material surface in the application and makes carbon source material in original by high-temperature burning process
Expect surface carbonation, effectively reduce the agglomeration between raw particles, improves its dispersibility in rubber material, and improve
Its conductive and heating conduction；
2. the application is passed through the gas containing carbon atom in calcining, these gases are efficiently entering in gap, are effectively filled out
The gap generated in carbon source material carbonisation has been mended, the carbonation rate and carbonization uniformity on raw material surface are improved, and has passed through drop
Low surface porosity factor achievees the effect that improve surface conjugation in turn；
3. being carried out in gap under surfactant and hot environment in the application using the gas of carbon atoms
Carbonization, and be carbonized again on carbon source material surface, so that there is the double-deck carburization zone on the application raw material surface, effectively raise
The carbonation rate and carbonization uniformity on raw material surface, further improve dispersibility of the raw material in rubber material；
4. the water-soluble latex molecule in the application can be coated on silica particle surface, silica after high temperature is fired
Latex carbonization in surface improves its conductive, heating conduction；
5. raw material is pre-processed by ball milling in the application, its molecule agglomeration is reduced, the dispersibility of raw material is improved；
6. the application utilizes centrifugal spray drying step, the reunion between raw particles further reduced, so that carbon source
Substance more evenly be wrapped in raw material surface；
7. the modified white carbon black in the application can be by the carbon black in tire formulation, white carbon black replacement 10~100%, accordingly
Tire drag coefficient can reduce by 10~50%, and tensile strength improves 10~20%.
Specific embodiment
Embodiment 1: a kind of modified white carbon black:
(1) take 450-550g go deimpurity silica sample be put into ball milling 5 in the ball grinder equipped with zirconium oxide bead~
Filtrate is obtained by filtration using 500-1800 mesh screen in 10h, and water-soluble latex is then added, and the solid content of water-soluble latex is added
It is the 10~100% of silica weight, is dried to obtain filtrate using drying machine with centrifugal spray after 30-40min is mixed
Powder material.
(2) it weighs the above-mentioned powder material of 450-550g to be put into 20L agitator tank, 5g~100g surfactant is added, stirs
It is taken out after mixing 40~60min of mixing.Then above-mentioned mixture is placed in a vacuum drying oven, 70-100 DEG C of baking 1.5-2.5h.
(3) sample after above-mentioned baking is put into stirring-type reaction kettle, the nitrogen that injection purity is 99.99%, temperature is
700~950 DEG C, reach the gas containing carbon atom that 20~100ml/min is continually fed into after set temperature, reaction time 120
~480min obtains modified white carbon black product after cooling.
Wherein, the gas containing carbon atom is methane, ethane, ethylene, acetylene, propylene, propane, benzene or toluene.
Wherein, surfactant is sodium cellulose glycolate, lauryl sodium sulfate, N- sodium lauroyl sarcosine, 12
Alkyl phosphate, paraffin, coal tar, C5 Petropols, C9 Petropols, petroleum residual oil, glycerol, one in hydroxyethyl cellulose
Kind or two or more mixing, be any proportion when two or more mixing.
Wherein, water-soluble glue latex is the mixing of one or more of Heveatex, styrene-butadiene latex, two or more
It is any proportion when mixing, water-soluble glue cream performance indicator such as the following table 1:
The performance indicator of the water-soluble latex of table 1
The performance indicator of drying machine with centrifugal spray such as the following table 2:
The performance indicator of 2 drying machine with centrifugal spray of table
Specific implementation condition such as the following table 3:
3 specific embodiment of table and implementation condition
Embodiment 2: characterization
Characterizing method: wherein DBP oil factor is tested according to standard HG/T 3072-2008；Dioxide-containing silica according to
Standard HG/T 3062-2008 is tested；Heating loss is measured according to standard HG/T 3065-2008；Burning decrement is pressed
The quasi- HG/T 3066-2008 standard of sighting target is measured；PH value is measured according to standard HG/T 3067-2008 standard.
The performance test results of 4 modified white carbon black of table
From above-mentioned experimental result it is found that wherein compared with Example 4, the partial size of silica is too small for comparative example 1；Comparative example
2 compared with Example 4, and the partial size of silica is too big；Compared with Example 4, the additional amount of water-soluble latex is less than comparative example 3
The 10% of silica volume；Compared with Example 4, temperature is too high when baking for comparative example 4；Comparative example 5 compared with Example 4, is led to
The rate for entering acetylene gas is too low；Compared with Example 4, the rate for being passed through acetylene gas is too high for comparative example 6；Comparative example 7 and reality
It applies example 4 to compare, is not passed through the gas of carbon atoms.
By the experimental data in table 4 it is found that the particle size of silica, the additional amount of water-soluble latex, baking item
Part is passed through being passed through and be passed through condition all and influencing the properties of product of modified white carbon black for carbonaceous gas, and properties of product are in turn
Influence dispersibility, binding force etc. of the modified white carbon black in rubber product.
Embodiment 3
The modified white carbon black being prepared in embodiment 1 is added to the performance of rubber after rubber, wherein tread rubber by
The raw material of following parts by weight is made: including 40-60 parts of natural rubber, 40-60 parts of butadiene rubber, 10-60 parts of carbon black N234,
10-60 parts of modified white carbon black, 2-5 parts of coupling agent Si69,2-5 parts of stearic acid, 2-5 parts of zinc oxide, 1-3 parts of antioxidant 4020,
0.5-2 parts of anti-aging agent RD, protection wax 80#0.5-2,1-3 parts of reinforced resin, 0.5-2 parts of sulphur, promotees 70#0.5-2 parts of protection wax
Into 0.5-2 parts of agent NS.
Sample 1: 50 parts of natural rubber, 50 parts of butadiene rubber, 50 parts of carbon black N234,10 parts of modified white carbon black, coupling agent
4 parts of Si69,4 parts of stearic acid, 4 parts of zinc oxide, 2.2 parts of antioxidant 4020,1.2 parts of anti-aging agent RD, 70#1.4 parts of protection wax,
80#1.4 parts of protection wax, 2.5 parts of reinforced resin, 1.7 parts of sulphur, 1.5 parts of accelerator NS.
Sample 2: 50 parts of natural rubber, 50 parts of butadiene rubber, 10 parts of carbon black N234,40 parts of modified white carbon black, coupling agent
4 parts of Si69,4 parts of stearic acid, 4 parts of zinc oxide, 2.2 parts of antioxidant 4020,1.2 parts of anti-aging agent RD, 70#1.4 parts of protection wax,
80#1.4 parts of protection wax, 2.5 parts of reinforced resin, 1.7 parts of sulphur, 1.5 parts of accelerator NS.
Sample 3: 40 parts of natural rubber, 40 parts of butadiene rubber, 10 parts of carbon black N234,10 parts of modified white carbon black, coupling agent
2 parts of Si69,2 parts of stearic acid, 2 parts of zinc oxide, 1 part of antioxidant 4020,0.5 part of anti-aging agent RD, 70#0.5 parts of protection wax, prevent
Protect wax 80#0.5,1 part of reinforced resin, 0.5 part of sulphur, 0.5 part of accelerator NS.
Sample 4: 60 parts of natural rubber, 60 parts of butadiene rubber, 60 parts of carbon black N234,60 parts of modified white carbon black, coupling agent
5 parts of Si69,5 parts of stearic acid, 5 parts of zinc oxide, 3 parts of antioxidant 4020,2 parts of anti-aging agent RD, 70#02 parts of protection wax, protection wax
80#2,3 parts of reinforced resin, 2 parts of sulphur, 2 parts of accelerator NS.
Tread rubber is obtained according to existing conventional synthesis process with above-mentioned raw materials, through detecting, above-mentioned tread rubber all meets existing
There is the requirement of national standard.
It is influenced to characterize performance, is comparative example 1-4.Wherein comparative example 1 and the difference of sample 1 are: will be in formula
Modified white carbon black replaces with common white carbon black；The difference of comparative example 2 and sample 1 is to replace with the modified white carbon black in formula
Carbon black N234；Comparative example 3 and the difference of sample 2 are: the modified white carbon black in formula is replaced with common white carbon black；Comparative example
4 are the modified white carbon black in being formulated replacing with carbon black N234 with the difference of sample 2；It compares and finds by sample 1, modification is white
Springback angle, tensile strength, elongation at break can be improved in the addition of carbon black compared with white carbon black；It is improved compared with carbon black N234 disconnected
Split elongation, springback angle.By sample 2 compare find, the addition of modified white carbon black can be improved compared with white carbon black springback angle,
Elongation at break；Elongation at break, springback angle are improved compared with carbon black N234.Springback angle is the standard for characterizing coefficient of rolling resistance
Parameter, the bigger rolling resistance of springback angle are smaller.The test performance of the said goods is characterized below, wherein elongation at break is surveyed
Method for testing or testing standard are as follows: GB/T528-2009；Wear test method or testing standard are as follows: GB/T 1689-2014；Rebound
Angle test method or testing standard are as follows: GB/T 1681-2009；Hardness measuring method or testing standard are as follows: GB/T 531.1-
2008；Determination of conductive coefficients method or testing standard are as follows: GB/T 10295-2008.
The part composition and the performance test results of 5 tread rubber of table
By contrast sample 1, comparative example 1, comparative example 2, the elongation at break of contrast sample 2, comparative example 3, comparative example 4,
It is found that in the case where additive amount is respectively 10 parts and 40 parts, the fracture for the product that carbon-coated modified white carbon black obtains twice
Elongation is superior to that the common white carbon black and carbon black N234 sample of isodose is added.It is presumably due to changing after carbon coating twice
Property white carbon black and rubber constituent have better compatibility, interior molecules connection it is even closer.
For springback angle, made by contrast sample 1, comparative example 1, comparative example 2 in the case where additive amount is 10 parts
With the springback angle of modified white carbon black sample than having used the sample of common white carbon black high 10.5%, than the sample for using carbon black N234
It is high by 16.7%.By contrast sample 2, comparative example 3, comparative example 4, used using the springback angle ratio of modified white carbon black sample common
The sample of white carbon black is high by 48.7%, than having used the sample of carbon black N234 high 35.6%.By to sample 1, sample 2, comparison
Example 1, comparative example 3,4 three groups of comparative example 2, comparative example sample springback angle comparison discoveries, equally increase to 40 by 10 parts in additive amount
In the case of part, 45.2% is improved using modified white carbon black sample, 7.9% is improved using common white carbon black sample, uses charcoal
Black N234 sample improves 25%.I.e. in double contrast laterally, longitudinal, the rubber sample springback angle of modified white carbon black is used
It is superior to the rubber sample of common white carbon black and carbon black N234.Being presumably due to the modified white carbon black of the application, carbon coating is grasped twice
The compatibility and dispersibility for improving modified white carbon black increase its binding force with rubber molecule, therefore have preferable
Improve resilience, that is, rolling resistance performance.
For thermal coefficient, the detection parameters of Tread Compound Property are obtained by above-mentioned 6 formulas, it can be seen that use carbon black
The sample of N234 has optimal heating conduction, and the use of common white carbon black can significantly reduce the thermal coefficient of sample, and dosage
More thermal coefficients are lower.But it is significantly better than the sample using common white carbon black using the modified white carbon black of the application, from side
Face secondary evidence feasibility of the invention.And situation is reduced as thermal coefficient will not occur for the increase of dosage, therefore considering this
When applying for the content in tread rubber, without considering influence of the content for thermal coefficient, the application is improved in tread rubber
The space of content adjustment.
Although the wear hardness and hardness of sample have floating variation during adjusting modified white carbon black usage amount,
And global advantage is little compared with carbon black N234, common white carbon black, but performance parameter is also substantially suitable, has preferable commercial
Property.
All the embodiments in this specification are described in a progressive manner, same and similar portion between each embodiment
Dividing may refer to each other, and each embodiment focuses on the differences from other embodiments.Especially for system reality
For applying example, since it is substantially similar to the method embodiment, so being described relatively simple, related place is referring to embodiment of the method
Part explanation.
The above description is only an example of the present application, is not intended to limit this application.For those skilled in the art
For, various changes and changes are possible in this application.All any modifications made within the spirit and principles of the present application are equal
Replacement, improvement etc., should be included within the scope of the claims of this application.
Claims (10)
1. a kind of modified white carbon black, which is characterized in that the modified white carbon black by being made following preparation method, the preparation method
Include the steps that surfactant progress high-temperature calcination is added after mixing raw material with carbon source material obtains modified white carbon black, institute
High-temperature burning process is stated to include the steps that being passed through the gas containing carbon atom under the protection of inert gas.
2. a kind of modified white carbon black according to claim 1, it is characterised in that: the gas containing carbon atom is first
Alkane, ethane, ethylene, acetylene, propylene, propane, benzene or toluene, the gas containing carbon atom be passed through rate be 20~
100ml/min。
3. a kind of modified white carbon black according to claim 1, it is characterised in that: the raw material be silicon-dioxide powdery, two
The average grain diameter of silica powder is 500-1800 mesh, and the density of silicon-dioxide powdery is 2.5-2.8g/mL, silicon-dioxide powdery
In iron-content be less than 500mg/kg.
4. a kind of modified white carbon black according to claim 1, it is characterised in that: the carbon source material is water-soluble latex,
The water-soluble glue latex is the mixing of one or more of Heveatex, styrene-butadiene latex, and whens two or more mixing is
Any proportion.
5. a kind of modified white carbon black according to claim 4, it is characterised in that: by weight percentage, the water solubility
The additional amount of latex is the 10-100% of raw material.
6. a kind of modified white carbon black according to claim 1, it is characterised in that: further include carrying out pretreated step to raw material
Suddenly, the pretreatment of raw material includes the steps that carrying out raw material into ball-milling treatment, and Ball-milling Time is 5~10h, makes again after ball-milling treatment
Raw material filtrate is obtained with the screen to filtrate of 500-1800 mesh.
7. a kind of modified white carbon black according to claim 6, it is characterised in that: mix raw material filtrate with carbon source material and stir
It mixes 30-40min and obtains mixed solution, then obtain powder material, the centrifugal spray drying after carrying out centrifugal spray drying step
Condition are as follows: hot wind inlet temperature is 290-310 DEG C, and hot-blast outlet temperature is 105-111 DEG C, and the conveying speed of mixed solution is
20-40ml/min, average drying time are 1.0-1.5s.
8. a kind of modified white carbon black according to claim 7, it is characterised in that: according to parts by weight, at 450-550 parts
After 5-100 parts of surfactant is added in powder material and stirs 40-60min, it is placed in a vacuum drying oven at 70-100 DEG C
It is put into stirring-type reaction kettle after baking 1.5-2.5h and carries out high-temperature calcination, temperature is 700-950 DEG C when high-temperature calcination, when reaction
Between 120-480min.
9. a kind of modified white carbon black according to claim 1, it is characterised in that: the inert gas is nitrogen, the nitrogen
Gas purity is 99.99%；The surfactant is sodium cellulose glycolate, lauryl sodium sulfate, N- Hamposyl L
Sodium, 1-isobutyl-3,5-dimethylhexylphosphoric acid, paraffin, coal tar, C5 Petropols, C9 Petropols, petroleum residual oil, glycerol, hydroxy ethyl fiber
One or more kinds of mixing of element, whens two or more mixing are any proportion.
10. a kind of includes the tread rubber of the modified white carbon black as described in claim 1-9 any one, which is characterized in that by following
The raw material of parts by weight is made: including 40-60 parts of natural rubber, 40-60 parts of butadiene rubber, 10-60 parts of carbon black N234, being modified
10-60 parts of white carbon black, 2-5 parts of stearic acid, 2-5 parts of zinc oxide, 1-3 parts of antioxidant 4020, is prevented always 2-5 parts of coupling agent Si69
0.5-2 parts of agent RD, 70#0.5-2 parts of protection wax, 80#0.5-2 parts of protection wax, 1-3 parts of reinforced resin, 0.5-2 parts of sulphur, promote
0.5-2 parts of agent NS.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910733787.5A CN110396226B (en) | 2019-08-09 | 2019-08-09 | Modified white carbon black and tread rubber thereof |
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